Python multiprocessing fork
Project description
python-multiprocessing
About
billiard is a fork of the Python 2.7 multiprocessing package. The multiprocessing package itself is a renamed and updated version of R Oudkerk’s pyprocessing package. This standalone variant is intended to be compatible with Python 2.4 and 2.5, and will draw it’s fixes/improvements from python-trunk.
This package would not be possible if not for the contributions of not only the current maintainers but all of the contributors to the original pyprocessing package listed here
Also it is a fork of the multiprocessin backport package by Christian Heims.
It includes the no-execv patch contributed by sbt.
And the Pool improvements previously located in Celery.
Bug reporting
Please report bugs related to multiprocessing at the Python bug tracker. Issues related to billiard should be reported at http://github.com/ask/billiard/issues.
Changes
2.7.3.5 - 2012-05-09
Now always cleans up after sys.exc_info() to avoid cyclic references.
ExceptionInfo without arguments now defaults to sys.exc_info.
Forking can now be disabled using the MULTIPROCESSING_FORKING_DISABLE environment variable.
Also this envvar is set so that the behavior is inherited after execv.
The semaphore cleanup process started when execv is used now sets a useful process name if the setproctitle module is installed.
Sets the FORKED_BY_MULTIPROCESSING environment variable if forking is disabled.
2.7.3.4 - 2012-04-27
Added billiard.ensure_multiprocessing()
Raises NotImplementedError if the platform does not support multiprocessing (e.g. Jython).
2.7.3.3 - 2012-04-23
PyPy now falls back to using its internal _multiprocessing module, so everything works except for forking_enable(False) (which silently degrades).
Fixed Python 2.5 compat issues.
Uses more with statements
Merged some of the changes from the Python 3 branch.
2.7.3.2 - 2012-04-20
Now installs on PyPy/Jython (but does not work).
2.7.3.1 - 2012-04-20
Python 2.5 support added.
2.7.3.0 - 2012-04-20
Updated from Python 2.7.3
Python 2.4 support removed, now only supports 2.5, 2.6 and 2.7. (may consider py3k support at some point).
Pool improvments from Celery.
no-execv patch added (http://bugs.python.org/issue8713)
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